S-90265A193 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Corrosion Resistance: Crafted from 18-8 Stainless Steel for long-lasting performance in demanding environments, reducing replacement frequency and maintenance costs.
• Superior Torque Transmission & Grip: The knurled socket head and 2.5mm hex drive prevent tool slippage, ensuring secure fastening and efficient assembly.
• High Mechanical Strength & Reliability: With a 70,000 psi tensile strength and Rockwell B83 hardness, this screw withstands high-stress applications without failing.
• Precision Alignment & Spacing: The integrated 8mm shoulder with a tight diameter tolerance acts as a precise pivot or spacer, eliminating the need for additional components.
• Optimized for High-Speed Assembly: The M3 coarse pitch (0.5mm) and Class 5g6g thread fit enable quick and reliable engagement, speeding up production cycles.
• Guaranteed Quality & Consistency: Manufactured to ISO 7379 specifications, ensuring dimensional accuracy and interchangeability in global supply chains.
• Safe for Regulated Industries: Compliant with RoHS 3 and REACH regulations, making it suitable for electronics, medical devices, and other sensitive applications.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical alignment and pivot-point challenges in industrial applications. The 18-8 Stainless Steel construction provides excellent resistance to rust and corrosion, which is vital for machinery operating in humid or washdown environments. The 5mm thread length and 8mm shoulder work in tandem to securely fasten components while maintaining a precise gap, commonly used in assemblies like gears, pulleys, and linkages. The knurled socket head with a 2.5mm hex drive ensures that high torque can be applied without cam-out, reducing assembly errors and tool wear. Its high tensile strength and ISO 7379 compliance guarantee that it performs reliably in automated production lines and precision equipment, reducing downtime and ensuring long-term operational integrity.

Specification Summary & Compliance

This precision shoulder screw features an M3 x 0.5mm coarse pitch thread with a Class 5g6g fit for standard tolerance applications. The shoulder diameter is held to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, ensuring consistent performance. It is manufactured in accordance with ISO 7379 and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.